Compact traveling wheel set of thin seam mining machine

Abstract

The invention relates to a compact traveling wheel set of a thin seam mining machine. The compact traveling wheel set comprises a shaft sleeve and a traveling wheel sleeving the shaft sleeve, a left roller assembly, two rows of axial stress bearings and a right roller assembly are sequentially arranged between the shaft sleeve and the traveling wheel, the right end of the shaft sleeve is sleeved with a gland fixedly connected with the traveling wheel, and the gland axially positions the right roller assembly; and the left roller assembly is axially positioned by arranging an end cover at the left end of the shaft sleeve in a sleeving mode or arranging a flange integrated with the walking wheel at the left end of the left roller assembly, the left roller assembly comprises a left roller set and a left supporting sleeve, the left supporting sleeve and the shaft sleeve provide an outer roller path and an inner roller path for the left roller set respectively, and the right roller assembly comprises a right roller set and a right supporting sleeve; and the right supporting sleeve and the shaft sleeve respectively provide an outer roller path and an inner roller path for the right roller set, and the right flange and the left flange on the left supporting sleeve and the right supporting sleeve respectively provide right-end axial positioning and left-end positioning for the left roller set and the right roller set. The compact traveling wheel set can bear large radial and axial force, and the adaptability is improved when a wear-resistant layer on the contact surface of a guide sliding shoe and a rail is excessively worn.

Description

technical field [0001] The invention relates to a walking wheel set of a coal mining machine, which is especially suitable for the walking system of a thin coal seam coal mining machine, especially when the walking wheel set bears a large axial force after the wear-resistant layer of the guide shoe is excessively worn. Coal mining machinery technology field. Background technique [0002] The walking system of a thin coal seam shearer usually requires a smaller diameter, and the structural design of the walking wheel set is from two pieces of self-aligning roller bearings or a double-row roller bearing usually used in the middle thick or thin coal seam walking wheel set. The structure of sub-bearings has been developed into the form of a multi-row roller structure (see Figure 7 ). Compared with the bearing of ordinary structure, the roller structure removes the conventional inner ring and outer ring, and directly uses the inner hole 131 of the road wheel 1 and the outer cyl...

AI Technical Summary

Problems solved by technology

However, this maintenance method leads to high cost of time and spare parts loss. What is more serious is that when there are a large number of hard lithology or faults in the mining coal seam working face, it is basically impossible to accurately predict or directly detect the amount of wear. Caused overall damage to the walking wheel assembly, and some even damaged the mounting holes of the walking wheel set on the walking box shell, resulting in greater losses and seriously affecting coal production

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